Table 4. Comparison between the thermosensitive (study group 1) and silicone plug (study group 2) as regards mean corneal sensation pre and post plug insertion along the period of follow up.

Parameters	Group 1 (range)	Group 2 (range)	P
Baseline (pre-plug insertion)
Corneal centre	4.02±0.75 (3.0-5.0)	4.06±0.72 (3.0-5.0)	0.16 (NS)
ST quadrant	3.71±0.99 (2.0-6.0)	3.67±0.95 (2.0-6.0)	0.42 (NS)
SN quadrant	2.35±0.95 (1.0-4.0)	2.44±0.94 (1.0-4.0)	0.16 (NS)
IT quadrant	2.31±1.10 (1.0-5.0)	2.35±1.02 (1.0-5.0)	0.53 (NS)
IN quadrant	2.13±0.86 (1.0-4.0)	2.20±0.84 (1.0-4.0)	0.18 (NS)
3mo post-insertion
Corneal centre	4.93±0.80 (4.0-6.0)	3.58±0.78 (2.0-5.0)	<0.001 (SS)
ST quadrant	4.31±0.79 (3.0-6.0)	3.89±0.97 (2.0-6.0)	<0.001 (SS)
SN quadrant	3.28±0.84 (2.0-5.0)	2.82±0.85 (1.0-4.0)	<0.001 (SS)
IT quadrant	3.37±0.96 (1.0-5.0)	2.94±0.99 (1.0-5.0)	<0.001 (SS)
IN quadrant	3.11±1.00 (1.0-5.0)	2.79±0.89 (1.0-4.0)	0.004 (SS)
6mo post-insertion
Corneal centre	5.40±0.65 (4.0-6.0)	5.75±0.44 (5.0-6.0)	0.11 (NS)
ST quadrant	5.31±0.63 (4.0-6.0)	5.46±0.51 (5.0-6.0)	0.32 (NS)
SN quadrant	5.26±0.64 (4.0-6.0)	5.37±0.65 (4.0-6.0)	0.27 (NS)
IT quadrant	5.28±0.69 (4.0-6.0)	5.37±0.57 (4.0-6.0)	0.66 (NS)
IN quadrant	5.31±0.72 (4.0-6.0)	5.42±0.65 (4.0-6.0)	0.40 (NS)

NS: Statistically non significant; SS: Statistically significant; ST: Superotemporal; SN: Superonasal; IT: Inferotemporal; IN: Inferonasal.

x±s, cm